It really comes down to weather or not the exchange brings anything new or not. I've been with a new exchange for about a year now and were almost to market. Our thing is holding ourselves accountable which exchanges generally seem to avoid doing. We require signatures from both parties (exchange/user) for every action taken, from trades to account updates.
We just pushed a blog by one of our co-founders. The Only Way Forward for Crypto Exchanges: Information Parity With Each and Every User.
https://medium.com/symetria-hq/https-medium-com-symetria-hq-the-only-way-forward-for-crypto-exchanges-26ae270a5bdIf anyone has questions about our tech or our plans lemme know.